package com.itzh.netty.groupchat;

import io.netty.bootstrap.Bootstrap;
import io.netty.channel.*;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.handler.codec.string.StringDecoder;
import io.netty.handler.codec.string.StringEncoder;

import java.util.Scanner;

public class GroupChatClient {
    private final String host;
    private final int port;
    public GroupChatClient(String host,int port){
        this.port = port;
        this.host = host;
    }

    public void run() throws InterruptedException {
        EventLoopGroup eventExecutors = new NioEventLoopGroup();
        try{


        Bootstrap bootstrap = new Bootstrap();
        bootstrap.group(eventExecutors)
                .channel(NioSocketChannel.class)
                .handler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    protected void initChannel(SocketChannel ch) throws Exception {
                        //得到pipeline
                        ChannelPipeline pipeline = ch.pipeline();
                        pipeline.addLast("decoder",new StringDecoder());
                        pipeline.addLast("encoder",new StringEncoder());
                        pipeline.addLast(new GroupChatClientHandler());
                    }
                });
            ChannelFuture channelFuture = bootstrap.connect(host, port).sync();
            Channel channel = channelFuture.channel();
            System.out.println("-----------"+channel.localAddress()+"----------");
            //客户端需要输入信息，创建一个扫描器
            Scanner scanner = new Scanner(System.in);
            while(scanner.hasNextLine()){
                String msg = scanner.nextLine();
                channel.writeAndFlush(msg+"\r\n");
            }
        }finally {
            eventExecutors.shutdownGracefully();
        }
    }

    public static void main(String[] args) throws InterruptedException {
        new GroupChatClient("127.0.0.1",7000).run();
    }

}
